Working with function and arrow keys (GNU Emacs FAQ)

Next: How do I set the X key “translations” for Emacs?, Previous: Why doesn’t this [terminal or window-system setup] code work in my init file, but it works just fine after Emacs starts up?, Up: Key bindings [Contents][Index]

9.4 How do I tell what characters or symbols my function or arrow keys emit?

Type C-h c then the function or arrow keys. The command will return either a function key symbol or character sequence (see the Emacs documentation for an explanation). This works for other keys as well.